351222213 has 16 divisors (see below), whose sum is σ = 494156160. Its totient is φ = 221447424.

The previous prime is 351222173. The next prime is 351222217. The reversal of 351222213 is 312222153.

It is not a de Polignac number, because 351222213 - 2⁹ = 351221701 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 351222213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (351222217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22456 + ... + 34737.

It is an arithmetic number, because the mean of its divisors is an integer number (30884760).

Almost surely, 2^351222213 is an apocalyptic number.

It is an amenable number.

351222213 is a deficient number, since it is larger than the sum of its proper divisors (142933947).

351222213 is a wasteful number, since it uses less digits than its factorization.

351222213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57308.

The product of its digits is 720, while the sum is 21.

The square root of 351222213 is about 18740.9234831158. The cubic root of 351222213 is about 705.5492344963.

Adding to 351222213 its reverse (312222153), we get a palindrome (663444366).

The spelling of 351222213 in words is "three hundred fifty-one million, two hundred twenty-two thousand, two hundred thirteen".